463 citations · 3k across the 44 of their papers we have counts for
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cond-mat.str-el2007★ 68 cited
Dual Fermion Approach to Susceptibility of Correlated Lattice Fermions
S. Brener, H. Hafermann, A. N. Rubtsov +2
In this paper, we show how the two-particle Green function (2PGF) can be obtained within the framework of the Dual Fermion approach. This facilitates the calculation of the suscept…
cond-mat.str-el2007★ 37 cited
Cluster Dual Fermion Approach to Nonlocal Correlations
H. Hafermann, S. Brener, A. N. Rubtsov +2
We formulate a general cluster Dual Fermion Approach to nonlocal correlations in crystals. The scheme allows the treatment of long-range correlations beyond cluster DMFT and nonloc…